ARM: Remove DISCONTIGMEM support

Everything should now be using sparsemem rather than discontigmem, so
remove the code supporting discontigmem from ARM.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

6 files changed, 136 insertions, 231 deletions

diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index e8d34a80851c..d63b6c413758 100644
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -15,7 +15,6 @@ endif
 obj-$(CONFIG_MODULES)		+= proc-syms.o
 
 obj-$(CONFIG_ALIGNMENT_TRAP)	+= alignment.o
-obj-$(CONFIG_DISCONTIGMEM)	+= discontig.o
 obj-$(CONFIG_HIGHMEM)		+= highmem.o
 
 obj-$(CONFIG_CPU_ABRT_NOMMU)	+= abort-nommu.o
diff --git a/arch/arm/mm/discontig.c b/arch/arm/mm/discontig.c
deleted file mode 100644
index c8c0c4b0f0a3..000000000000
--- a/arch/arm/mm/discontig.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * linux/arch/arm/mm/discontig.c
- *
- * Discontiguous memory support.
- *
- * Initial code: Copyright (C) 1999-2000 Nicolas Pitre
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/mmzone.h>
-#include <linux/bootmem.h>
-
-#if MAX_NUMNODES != 4 && MAX_NUMNODES != 16
-# error Fix Me Please
-#endif
-
-/*
- * Our node_data structure for discontiguous memory.
- */
-
-pg_data_t discontig_node_data[MAX_NUMNODES] = {
-  { .bdata = &bootmem_node_data[0] },
-  { .bdata = &bootmem_node_data[1] },
-  { .bdata = &bootmem_node_data[2] },
-  { .bdata = &bootmem_node_data[3] },
-#if MAX_NUMNODES == 16
-  { .bdata = &bootmem_node_data[4] },
-  { .bdata = &bootmem_node_data[5] },
-  { .bdata = &bootmem_node_data[6] },
-  { .bdata = &bootmem_node_data[7] },
-  { .bdata = &bootmem_node_data[8] },
-  { .bdata = &bootmem_node_data[9] },
-  { .bdata = &bootmem_node_data[10] },
-  { .bdata = &bootmem_node_data[11] },
-  { .bdata = &bootmem_node_data[12] },
-  { .bdata = &bootmem_node_data[13] },
-  { .bdata = &bootmem_node_data[14] },
-  { .bdata = &bootmem_node_data[15] },
-#endif
-};
-
-EXPORT_SYMBOL(discontig_node_data);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index f6a999465323..4011e524cb1d 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -79,38 +79,37 @@ struct meminfo meminfo;
 void show_mem(void)
 {
 	int free = 0, total = 0, reserved = 0;
-	int shared = 0, cached = 0, slab = 0, node, i;
+	int shared = 0, cached = 0, slab = 0, i;
 	struct meminfo * mi = &meminfo;
 
 	printk("Mem-info:\n");
 	show_free_areas();
-	for_each_online_node(node) {
-		for_each_nodebank (i,mi,node) {
-			struct membank *bank = &mi->bank[i];
-			unsigned int pfn1, pfn2;
-			struct page *page, *end;
-
-			pfn1 = bank_pfn_start(bank);
-			pfn2 = bank_pfn_end(bank);
-
-			page = pfn_to_page(pfn1);
-			end  = pfn_to_page(pfn2 - 1) + 1;
-
-			do {
-				total++;
-				if (PageReserved(page))
-					reserved++;
-				else if (PageSwapCache(page))
-					cached++;
-				else if (PageSlab(page))
-					slab++;
-				else if (!page_count(page))
-					free++;
-				else
-					shared += page_count(page) - 1;
-				page++;
-			} while (page < end);
-		}
+
+	for_each_bank (i, mi) {
+		struct membank *bank = &mi->bank[i];
+		unsigned int pfn1, pfn2;
+		struct page *page, *end;
+
+		pfn1 = bank_pfn_start(bank);
+		pfn2 = bank_pfn_end(bank);
+
+		page = pfn_to_page(pfn1);
+		end  = pfn_to_page(pfn2 - 1) + 1;
+
+		do {
+			total++;
+			if (PageReserved(page))
+				reserved++;
+			else if (PageSwapCache(page))
+				cached++;
+			else if (PageSlab(page))
+				slab++;
+			else if (!page_count(page))
+				free++;
+			else
+				shared += page_count(page) - 1;
+			page++;
+		} while (page < end);
 	}
 
 	printk("%d pages of RAM\n", total);
@@ -121,7 +120,7 @@ void show_mem(void)
 	printk("%d pages swap cached\n", cached);
 }
 
-static void __init find_node_limits(int node, struct meminfo *mi,
+static void __init find_limits(struct meminfo *mi,
 	unsigned long *min, unsigned long *max_low, unsigned long *max_high)
 {
 	int i;
@@ -129,7 +128,7 @@ static void __init find_node_limits(int node, struct meminfo *mi,
 	*min = -1UL;
 	*max_low = *max_high = 0;
 
-	for_each_nodebank(i, mi, node) {
+	for_each_bank (i, mi) {
 		struct membank *bank = &mi->bank[i];
 		unsigned long start, end;
 
@@ -154,14 +153,14 @@ static void __init find_node_limits(int node, struct meminfo *mi,
  * the end, we won't clash.
  */
 static unsigned int __init
-find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
+find_bootmap_pfn(struct meminfo *mi, unsigned int bootmap_pages)
 {
 	unsigned int start_pfn, i, bootmap_pfn;
 
 	start_pfn   = PAGE_ALIGN(__pa(_end)) >> PAGE_SHIFT;
 	bootmap_pfn = 0;
 
-	for_each_nodebank(i, mi, node) {
+	for_each_bank(i, mi) {
 		struct membank *bank = &mi->bank[i];
 		unsigned int start, end;
 
@@ -191,7 +190,7 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
 
 static int __init check_initrd(struct meminfo *mi)
 {
-	int initrd_node = -2;
+	int initrd = -2;
 #ifdef CONFIG_BLK_DEV_INITRD
 	unsigned long end = phys_initrd_start + phys_initrd_size;
 
@@ -202,17 +201,17 @@ static int __init check_initrd(struct meminfo *mi)
 	if (phys_initrd_size) {
 		unsigned int i;
 
-		initrd_node = -1;
+		initrd = -1;
 
 		for (i = 0; i < mi->nr_banks; i++) {
 			struct membank *bank = &mi->bank[i];
 			if (bank_phys_start(bank) <= phys_initrd_start &&
 			    end <= bank_phys_end(bank))
-				initrd_node = bank->node;
+				initrd = 0;
 		}
 	}
 
-	if (initrd_node == -1) {
+	if (initrd == -1) {
 		printk(KERN_ERR "INITRD: 0x%08lx+0x%08lx extends beyond "
 		       "physical memory - disabling initrd\n",
 		       phys_initrd_start, phys_initrd_size);
@@ -220,10 +219,10 @@ static int __init check_initrd(struct meminfo *mi)
 	}
 #endif
 
-	return initrd_node;
+	return initrd;
 }
 
-static void __init bootmem_init_node(int node, struct meminfo *mi,
+static void __init arm_bootmem_init(struct meminfo *mi,
 	unsigned long start_pfn, unsigned long end_pfn)
 {
 	unsigned long boot_pfn;
@@ -235,37 +234,36 @@ static void __init bootmem_init_node(int node, struct meminfo *mi,
 	 * Allocate the bootmem bitmap page.
 	 */
 	boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
-	boot_pfn = find_bootmap_pfn(node, mi, boot_pages);
+	boot_pfn = find_bootmap_pfn(mi, boot_pages);
 
 	/*
-	 * Initialise the bootmem allocator for this node, handing the
+	 * Initialise the bootmem allocator, handing the
 	 * memory banks over to bootmem.
 	 */
-	node_set_online(node);
-	pgdat = NODE_DATA(node);
+	node_set_online(0);
+	pgdat = NODE_DATA(0);
 	init_bootmem_node(pgdat, boot_pfn, start_pfn, end_pfn);
 
-	for_each_nodebank(i, mi, node) {
+	for_each_bank(i, mi) {
 		struct membank *bank = &mi->bank[i];
 		if (!bank->highmem)
-			free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank));
+			free_bootmem(bank_phys_start(bank), bank_phys_size(bank));
 	}
 
 	/*
-	 * Reserve the bootmem bitmap for this node.
+	 * Reserve the bootmem bitmap.
 	 */
-	reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT,
-			     boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
+	reserve_bootmem(boot_pfn << PAGE_SHIFT,
+			boot_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
 }
 
-static void __init bootmem_reserve_initrd(int node)
+static void __init bootmem_reserve_initrd(void)
 {
 #ifdef CONFIG_BLK_DEV_INITRD
-	pg_data_t *pgdat = NODE_DATA(node);
 	int res;
 
-	res = reserve_bootmem_node(pgdat, phys_initrd_start,
-			     phys_initrd_size, BOOTMEM_EXCLUSIVE);
+	res = reserve_bootmem(phys_initrd_start,
+			      phys_initrd_size, BOOTMEM_EXCLUSIVE);
 
 	if (res == 0) {
 		initrd_start = __phys_to_virt(phys_initrd_start);
@@ -279,23 +277,23 @@ static void __init bootmem_reserve_initrd(int node)
 #endif
 }
 
-static void __init bootmem_free_node(int node, struct meminfo *mi)
+static void __init arm_bootmem_free(struct meminfo *mi)
 {
 	unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
 	unsigned long min, max_low, max_high;
 	int i;
 
-	find_node_limits(node, mi, &min, &max_low, &max_high);
+	find_limits(mi, &min, &max_low, &max_high);
 
 	/*
-	 * initialise the zones within this node.
+	 * initialise the zones.
 	 */
 	memset(zone_size, 0, sizeof(zone_size));
 
 	/*
-	 * The size of this node has already been determined.  If we need
-	 * to do anything fancy with the allocation of this memory to the
-	 * zones, now is the time to do it.
+	 * The memory size has already been determined.  If we need
+	 * to do anything fancy with the allocation of this memory
+	 * to the zones, now is the time to do it.
 	 */
 	zone_size[0] = max_low - min;
 #ifdef CONFIG_HIGHMEM
@@ -303,11 +301,11 @@ static void __init bootmem_free_node(int node, struct meminfo *mi)
 #endif
 
 	/*
-	 * For each bank in this node, calculate the size of the holes.
-	 *  holes = node_size - sum(bank_sizes_in_node)
+	 * Calculate the size of the holes.
+	 *  holes = node_size - sum(bank_sizes)
 	 */
 	memcpy(zhole_size, zone_size, sizeof(zhole_size));
-	for_each_nodebank(i, mi, node) {
+	for_each_bank(i, mi) {
 		int idx = 0;
 #ifdef CONFIG_HIGHMEM
 		if (mi->bank[i].highmem)
@@ -320,9 +318,9 @@ static void __init bootmem_free_node(int node, struct meminfo *mi)
 	 * Adjust the sizes according to any special requirements for
 	 * this machine type.
 	 */
-	arch_adjust_zones(node, zone_size, zhole_size);
+	arch_adjust_zones(0, zone_size, zhole_size);
 
-	free_area_init_node(node, zone_size, min, zhole_size);
+	free_area_init_node(0, zone_size, min, zhole_size);
 }
 
 #ifndef CONFIG_SPARSEMEM
@@ -346,16 +344,16 @@ int pfn_valid(unsigned long pfn)
 }
 EXPORT_SYMBOL(pfn_valid);
 
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(struct meminfo *mi)
 {
 }
 #else
-static void arm_memory_present(struct meminfo *mi, int node)
+static void arm_memory_present(struct meminfo *mi)
 {
 	int i;
-	for_each_nodebank(i, mi, node) {
+	for_each_bank(i, mi) {
 		struct membank *bank = &mi->bank[i];
-		memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
+		memory_present(0, bank_pfn_start(bank), bank_pfn_end(bank));
 	}
 }
 #endif
@@ -364,55 +362,35 @@ void __init bootmem_init(void)
 {
 	struct meminfo *mi = &meminfo;
 	unsigned long min, max_low, max_high;
-	int node, initrd_node;
+	int initrd;
 
 	/*
-	 * Locate which node contains the ramdisk image, if any.
+	 * Locate the ramdisk image, if any.
 	 */
-	initrd_node = check_initrd(mi);
+	initrd = check_initrd(mi);
 
 	max_low = max_high = 0;
 
-	/*
-	 * Run through each node initialising the bootmem allocator.
-	 */
-	for_each_node(node) {
-		unsigned long node_low, node_high;
-
-		find_node_limits(node, mi, &min, &node_low, &node_high);
+	find_limits(mi, &min, &max_low, &max_high);
 
-		if (node_low > max_low)
-			max_low = node_low;
-		if (node_high > max_high)
-			max_high = node_high;
+	arm_bootmem_init(mi, min, max_low);
 
-		/*
-		 * If there is no memory in this node, ignore it.
-		 * (We can't have nodes which have no lowmem)
-		 */
-		if (node_low == 0)
-			continue;
-
-		bootmem_init_node(node, mi, min, node_low);
-
-		/*
-		 * Reserve any special node zero regions.
-		 */
-		if (node == 0)
-			reserve_node_zero(NODE_DATA(node));
+	/*
+	 * Reserve any special regions.
+	 */
+	reserve_special_regions();
 
-		/*
-		 * If the initrd is in this node, reserve its memory.
-		 */
-		if (node == initrd_node)
-			bootmem_reserve_initrd(node);
+	/*
+	 * If the initrd is present, reserve its memory.
+	 */
+	if (initrd == 0)
+		bootmem_reserve_initrd();
 
-		/*
-		 * Sparsemem tries to allocate bootmem in memory_present(),
-		 * so must be done after the fixed reservations
-		 */
-		arm_memory_present(mi, node);
-	}
+	/*
+	 * Sparsemem tries to allocate bootmem in memory_present(),
+	 * so must be done after the fixed reservations
+	 */
+	arm_memory_present(mi);
 
 	/*
 	 * sparse_init() needs the bootmem allocator up and running.
@@ -420,12 +398,11 @@ void __init bootmem_init(void)
 	sparse_init();
 
 	/*
-	 * Now free memory in each node - free_area_init_node needs
+	 * Now free the memory - free_area_init_node needs
 	 * the sparse mem_map arrays initialized by sparse_init()
 	 * for memmap_init_zone(), otherwise all PFNs are invalid.
 	 */
-	for_each_node(node)
-		bootmem_free_node(node, mi);
+	arm_bootmem_free(mi);
 
 	high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1;
 
@@ -460,7 +437,7 @@ static inline int free_area(unsigned long pfn, unsigned long end, char *s)
 }
 
 static inline void
-free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
+free_memmap(unsigned long start_pfn, unsigned long end_pfn)
 {
 	struct page *start_pg, *end_pg;
 	unsigned long pg, pgend;
@@ -483,13 +460,13 @@ free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
 	 * free the section of the memmap array.
 	 */
 	if (pg < pgend)
-		free_bootmem_node(NODE_DATA(node), pg, pgend - pg);
+		free_bootmem(pg, pgend - pg);
 }
 
 /*
  * The mem_map array can get very big.  Free the unused area of the memory map.
  */
-static void __init free_unused_memmap_node(int node, struct meminfo *mi)
+static void __init free_unused_memmap(struct meminfo *mi)
 {
 	unsigned long bank_start, prev_bank_end = 0;
 	unsigned int i;
@@ -499,7 +476,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
 	 * may not be the case, especially if the user has provided the
 	 * information on the command line.
 	 */
-	for_each_nodebank(i, mi, node) {
+	for_each_bank(i, mi) {
 		struct membank *bank = &mi->bank[i];
 
 		bank_start = bank_pfn_start(bank);
@@ -514,7 +491,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
 		 * between the current bank and the previous, free it.
 		 */
 		if (prev_bank_end && prev_bank_end != bank_start)
-			free_memmap(node, prev_bank_end, bank_start);
+			free_memmap(prev_bank_end, bank_start);
 
 		prev_bank_end = bank_pfn_end(bank);
 	}
@@ -528,21 +505,14 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
 void __init mem_init(void)
 {
 	unsigned long reserved_pages, free_pages;
-	int i, node;
+	int i;
 
-#ifndef CONFIG_DISCONTIGMEM
 	max_mapnr   = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
-#endif
 
 	/* this will put all unused low memory onto the freelists */
-	for_each_online_node(node) {
-		pg_data_t *pgdat = NODE_DATA(node);
-
-		free_unused_memmap_node(node, &meminfo);
+	free_unused_memmap(&meminfo);
 
-		if (pgdat->node_spanned_pages != 0)
-			totalram_pages += free_all_bootmem_node(pgdat);
-	}
+	totalram_pages += free_all_bootmem();
 
 #ifdef CONFIG_SA1111
 	/* now that our DMA memory is actually so designated, we can free it */
@@ -552,39 +522,35 @@ void __init mem_init(void)
 
 #ifdef CONFIG_HIGHMEM
 	/* set highmem page free */
-	for_each_online_node(node) {
-		for_each_nodebank (i, &meminfo, node) {
-			unsigned long start = bank_pfn_start(&meminfo.bank[i]);
-			unsigned long end = bank_pfn_end(&meminfo.bank[i]);
-			if (start >= max_low_pfn + PHYS_PFN_OFFSET)
-				totalhigh_pages += free_area(start, end, NULL);
-		}
+	for_each_bank (i, &meminfo) {
+		unsigned long start = bank_pfn_start(&meminfo.bank[i]);
+		unsigned long end = bank_pfn_end(&meminfo.bank[i]);
+		if (start >= max_low_pfn + PHYS_PFN_OFFSET)
+			totalhigh_pages += free_area(start, end, NULL);
 	}
 	totalram_pages += totalhigh_pages;
 #endif
 
 	reserved_pages = free_pages = 0;
 
-	for_each_online_node(node) {
-		for_each_nodebank(i, &meminfo, node) {
-			struct membank *bank = &meminfo.bank[i];
-			unsigned int pfn1, pfn2;
-			struct page *page, *end;
-
-			pfn1 = bank_pfn_start(bank);
-			pfn2 = bank_pfn_end(bank);
-
-			page = pfn_to_page(pfn1);
-			end  = pfn_to_page(pfn2 - 1) + 1;
-
-			do {
-				if (PageReserved(page))
-					reserved_pages++;
-				else if (!page_count(page))
-					free_pages++;
-				page++;
-			} while (page < end);
-		}
+	for_each_bank(i, &meminfo) {
+		struct membank *bank = &meminfo.bank[i];
+		unsigned int pfn1, pfn2;
+		struct page *page, *end;
+
+		pfn1 = bank_pfn_start(bank);
+		pfn2 = bank_pfn_end(bank);
+
+		page = pfn_to_page(pfn1);
+		end  = pfn_to_page(pfn2 - 1) + 1;
+
+		do {
+			if (PageReserved(page))
+				reserved_pages++;
+			else if (!page_count(page))
+				free_pages++;
+			page++;
+		} while (page < end);
 	}
 
 	/*
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 815d08eecbb0..7b19c90ab295 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -28,7 +28,5 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
 
 #endif
 
-struct pglist_data;
-
 void __init bootmem_init(void);
-void reserve_node_zero(struct pglist_data *pgdat);
+void reserve_special_regions(void);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 6a08087ab022..ddb1bee6de73 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -827,9 +827,9 @@ static inline void prepare_page_table(void)
 }
 
 /*
- * Reserve the various regions of node 0
+ * Reserve the various regions
  */
-void __init reserve_node_zero(pg_data_t *pgdat)
+void __init reserve_special_regions(void)
 {
 	unsigned long res_size = 0;
 
@@ -838,19 +838,17 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 	 * Note that this can only be in node 0.
 	 */
 #ifdef CONFIG_XIP_KERNEL
-	reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
-			BOOTMEM_DEFAULT);
+	reserve_bootmem(__pa(_data), _end - _data, BOOTMEM_DEFAULT);
 #else
-	reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
-			BOOTMEM_DEFAULT);
+	reserve_bootmem(__pa(_stext), _end - _stext, BOOTMEM_DEFAULT);
 #endif
 
 	/*
 	 * Reserve the page tables.  These are already in use,
 	 * and can only be in node 0.
 	 */
-	reserve_bootmem_node(pgdat, __pa(swapper_pg_dir),
-			     PTRS_PER_PGD * sizeof(pgd_t), BOOTMEM_DEFAULT);
+	reserve_bootmem(__pa(swapper_pg_dir),
+			PTRS_PER_PGD * sizeof(pgd_t), BOOTMEM_DEFAULT);
 
 	/*
 	 * Hmm... This should go elsewhere, but we really really need to
@@ -874,29 +872,22 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 
 	if (machine_is_h1940() || machine_is_rx3715()
 		|| machine_is_rx1950()) {
-		reserve_bootmem_node(pgdat, 0x30003000, 0x1000,
-				BOOTMEM_DEFAULT);
-		reserve_bootmem_node(pgdat, 0x30081000, 0x1000,
-				BOOTMEM_DEFAULT);
+		reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT);
+		reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
 	}
 
 	if (machine_is_palmld() || machine_is_palmtx()) {
-		reserve_bootmem_node(pgdat, 0xa0000000, 0x1000,
-				BOOTMEM_EXCLUSIVE);
-		reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
-				BOOTMEM_EXCLUSIVE);
+		reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
+		reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
 	}
 
 	if (machine_is_treo680() || machine_is_centro()) {
-		reserve_bootmem_node(pgdat, 0xa0000000, 0x1000,
-				BOOTMEM_EXCLUSIVE);
-		reserve_bootmem_node(pgdat, 0xa2000000, 0x1000,
-				BOOTMEM_EXCLUSIVE);
+		reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
+		reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE);
 	}
 
 	if (machine_is_palmt5())
-		reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
-				BOOTMEM_EXCLUSIVE);
+		reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
 
 	/*
 	 * U300 - This platform family can share physical memory
@@ -920,8 +911,7 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 	res_size = __pa(swapper_pg_dir) - PHYS_OFFSET;
 #endif
 	if (res_size)
-		reserve_bootmem_node(pgdat, PHYS_OFFSET, res_size,
-				BOOTMEM_DEFAULT);
+		reserve_bootmem(PHYS_OFFSET, res_size, BOOTMEM_DEFAULT);
 }
 
 /*
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 33b327379f07..25376d480b8e 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -18,20 +18,18 @@
 #include "mm.h"
 
 /*
- * Reserve the various regions of node 0
+ * Reserve the various regions
  */
-void __init reserve_node_zero(pg_data_t *pgdat)
+void __init reserve_special_regions(void)
 {
 	/*
 	 * Register the kernel text and data with bootmem.
 	 * Note that this can only be in node 0.
 	 */
 #ifdef CONFIG_XIP_KERNEL
-	reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
-			BOOTMEM_DEFAULT);
+	reserve_bootmem(__pa(_data), _end - _data, BOOTMEM_DEFAULT);
 #else
-	reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
-			BOOTMEM_DEFAULT);
+	reserve_bootmem(__pa(_stext), _end - _stext, BOOTMEM_DEFAULT);
 #endif
 
 	/*
@@ -39,8 +37,7 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 	 * some architectures which the DRAM is the exception vector to trap,
 	 * alloc_page breaks with error, although it is not NULL, but "0."
 	 */
-	reserve_bootmem_node(pgdat, CONFIG_VECTORS_BASE, PAGE_SIZE,
-			BOOTMEM_DEFAULT);
+	reserve_bootmem(CONFIG_VECTORS_BASE, PAGE_SIZE, BOOTMEM_DEFAULT);
 }
 
 /*